Harness motion for looms



Nov. 13, 1928.

. 1,691,143 w. M. wATTlE HARNESS MOTION FOR LOOKS Filed No'v. 25, 1927 s sheets-sheet 1 Now 13, 192s. 1,691,143

w. M. wAT'rlE HARNESS MOTION FOR LOOKS Filed Nov. 25. 1927 @Sheets-sheet 2 5e 56 45 M//m fz Maf/@ Nov. 13, 192s.- 1,091,143 w. M. WAT-ne HARNESS MOTION Fon Lools v Filed Nov. 25, 1927 s sheets-sheet 3 dito/ngc eral objeetot the invention t'o provide .mech-.

Patented Nov. 13, 1928,

'i UNITED PAIENTortica.;

WILLIAM M. WATTIE; orWORCESTERMASSACHUSETTS; AssIGiioR To oRoMPToN &`

KIvoWLEs LooM WonKs, or'WoRoiisfrEn., MAssA'cHiisETTs; A CORPORATION or HARNESS riiro'rioiv ron. LooMs Appiicatioa filed November a5, 1927/. serial No.1235`575.

This inveiition relates-'to improvements inharness motions for loonisand it is thegenanism whereby the period of operation ofV the harness iframes'inay Vbe variedso that the cycle of movement of the 'harness motion may be accomplished ina givenv number ofpicks of the loom' under certain. circumstances and completed in a differentinuinber otl piclis 'of the loom under other circumstances.

. f. In coending applicationSer.,Nov

` led-by )foward therev'isset forth ai mechanism which permitsy a. shirt inl thecontrol for theliarness frames so tliatwhen one partv of the fabric is beingf woven the 'harness frames will completertheir cyclekr ofvv-` move-` ment' in' given number of' picks and when anotherl part' of the fabric is being woven the cycle otmoveiiient of the harness trames willfb'e completed' in a differeiitniimber of picks. Such ay mechanism? isv desirable' in weaving certainvlinds of Terry towels. It

ness frames the various movements as speci@ fied with a fewer number of partsthan those employedl in the aforesaid application lto Howard. i l

It is' a; more speciiic obiect oi? iny'1invention to'piovide a treadle lever operativelyconiiected at all times totheharness frames which control the ground warps' and toprovide two actuating elements such as rotating" cams which complete their movements in a` different number of picks, the treadle lever` being provided withadevice which connects thesame with one or the other oit saidaetii` atiiio element-'s depending upon the character i which will appearas the description' proi` ceeds, myvinvention resides in the combina Aarranggement"` of parts hereinafter tienafed o, described and' set forth" iiiL the' claims; f

with time and ether# objects; 'lief 'vi-ew.

TnztheA accompanying drawings. wherein oneflorm of my invention is showii,`

removed for thesake of clearness,

Figa 2 is an end elevation taken' in thedif recti'on of arrow 2,.Fig. 1 withcertainfpartsf removed,

liig. 3 is' an enlarged vertical seetionfonf line-33- of Fig. 1',` f

l is a horizontal section onE line 1 -4t of Fig. 3,1 y y Figi 5 `is a verticali section'on line5--5n of- Figs and 7 are detailsshovvingthe'three; andi four piek cams, respectively., andf` Fig. 8 is aA view similar tov at portion.I of Figa() but showing theparts in aidiiierent" position.

Referring particularly toF-igs 1k andy 2 thelooinv 10 isi provided with; ground*andy pil'e` warp beams 11` and 12,iiespectivelyrthe; groiindfwarp @not thebeam 11 passingover a whip roll; 13 and being divided `between: rear and iiiont'liari'iessV :trames 14 and 15, respectively.. f The Terry'warp T firomthee beam: 12: extends forwardly and@ may lie-,Cons tr'oll'ed by' a jacquard patternr mechanism indicated diagramniat'ically at J:,`Fig.j 13. toY

torni any:V figures which'. may be desiredv in-` the fabric:` The 1' frames 141 and 15- are con nectedl` togetherfby straps 16 l which extend'.v over rollers 17 carried( by air osoillatable; shaft 18 supported-by xedfbeirringsvli) rigidY withtlie loom `frame.V i 'Y 55 V.Figc 1 is al rear elevation of a` loom prof vided with my invention, certainparts being;

The loom is provided with a bottom shaft;

2O j whieh makes al revolution` every second` pick ofthe loom*y to actuate arpiclring motion; iiotshowii. The-Terry forming mechanism has' 'been omittedv but: may be fsubstaritiallyA the saine as shownl in patent toBards-leyNo;

937,139 and. the controlsiforthe Terry vvarpsi` T havebeen omitted fromFi'gl Qias theyare well* understood;y The matter thus far; del scribedisi ofi-coi'niiion construction' iii'` Terry` towelllooms and forms `no' part of mywpresentinvention."

Ih cariying my improvements intov effect?A I provide: fname 30y Whiclivas vindicated in Figi,"may-vbefboltedfto tlie'rean and fronti cross ygrirts ,31; and 32;.ires'pectivel3zof the' loom fra-ine,` Stubyshaftl is heldin said" trame! byr3 seti andi has izreely` notai-.1

` keyed a ygear 42 Vwhich as shown herein meshes with the intermediate step 43 of a cone gear 44. The othery steps45 and 46 are positioned to cooperate withdiferent sized gears which may be securedto the hub 41 but the arrangement as set forth herein is such that the cam 35 will be given a rotation every third -pick of the rloom while the bottom shaft26 receives a complete revolutionV every second pick. y

The cam 36 has a. hub 47 to which-is keyed a gear 48 meshing with a pinion 49 keyed to the bottom shaft 2O and the ratio of the gear'48 and pinion49 is such that the' cam 36 will be given a revolution every fourth pick of the loom. As the loom continues to run the cams rotate constantly but in cycles of different numbers of picks. A fixed bracket 50 supports a pin 51 'on which Vis mounted hub 52 of the treadle lever 53, the-lower end of which is provided with notches 54. A link 55 located in one of the notches'54 'is attached to the lower end of av rod 56 the upper end of which is connected as at 57 to the harness frame 15. The other harness frame 14 is connected by means of a spring 58 toa vguide bracket 59 which is forkedas at `6() in 5 to receive and guide thetreadle lever. A stop screw 61 is adjustably held in the treadle lever by Ameans of lock nut V62and is positioned to engage the underside of cross girts 31 to limit upward movement of the treadle.

The mechanism for imparting` movement of the cams to the treadle lever includes a rocking lever 63 secured to rock shaft 64 eX tending through arms 65 preferably cast integral with the treadle lever. Said rock shaft has a. collar 66 secured theretowhich receives one end of a torsion spring 67 the other end of which enters lavlug 68 integral with the treadle lever; Said shaft extends through the lug 6,8 and has secured thereto an arm 69 the lower end of which is`l attached to rod 70v extending to the right as Y shown at the bottom of Fig. 1. \The rocking lever 63 is provided with a pivoted shoe 71l whichv is mounted for limited pivoted movement around a pin 72 Vpassing between and secured to theears 73 of the krocking lever 63. ASaid shoe is provided with face 74which is lpreferably broader than the distance between the surfaces 38 and 40 of the cams 35 and 36, respectively, and as shown in Fig. 5 the lower side of said shoe may be beveled as at 7 5 to engageV the surface 76 on the rock lever 63 between the ears 73. The purpose of this construction is to limit the movement of the shoe but permit the same to assume two operative angular posi.-

626.7 23 and forms no part ofmy present in-` vention, the same 'being what is generally terni-edv a jacquard indicator and, beingattached to the jacquard jacks 91 and 92. rThe indicator mechanism and the jacquard determine the position of lever 63 and therefore the motion of the treadle lever.

In operation with the parts in the position shown in full lines in Figs. 5 and 8 the cam 35 will engage the shoe 71 to depress the same once every third pick of the loom when the gearing is that shown inA Fig. 5. As the cam face 38 depresses'the shoe the treadle lever will be moved downwardly to causea corresponding downward movement lon full line position shown in Fig. 8 relatively tothe stub shaft 33 and will assume this position'which they assume when weaving the Terryrof body part of the fabric.

When it is `desired to pass from the body to the border ack 92 will be lifted and as set forth inthe aforesaid Patent No. 1,626,723 the indicator mechanism will operate to cause a right hand movement of the rod 70 which will move the lever 63 from the full to the dotted line position shown in Fig. 8. This shift` in the position of the rocking lever 63 takes place when the low parts of both cams are adjacent but spaced from the shoe by screw 61 being in engagement with the leftfgirt 31. In this way the kslice is free to move without obstruction on the part of the driving cams. When in the dotted line 'positionshown in Fig. 8 the shoe will be depressed by the cam 36 so thatas the loom continues to run the treadle lever will be heldk downfor two. picks and will then be 'up fork two picks, the low kpa'rtk39 of the cam 36permitting the s ring 58 to lift .the treadle lever and harness rame 15 while depressing the yharness frame 14. Vhen it is again desiredto weave Terry the jack 91 will bev raised to. cause the left f hand movement. of rod 70, the spring? vat this time assistlever.

ing in returningr the shoe 71 to the full line position shown in Figs. 5 and 8. By reason of the mechanism described and the control exercised by the jacquard and the indicator mechanism it is possible to place the shoe 7l in the path of one or the other of the constantly moving actuating cams or 36 and the harness frames will be given movements of different characters depending upon which cam is operatively related thereto.

Then the rocking lever 63 is in the full line position shown in Figs. 5 and 8 a toe 80 thereon will engage the treadle lever to limit angular movement oi said lever 63 to cause ,depression ol' the treadle lever. Vhen the lever 63 is rocked to the position shoivn' in dot-ted lines in Fig. 8 it will engagethe adjustable screw 8l carried by the treadle lever jto cause downward motion of the treadle From the foregoing it will be seen that I have providedy a harness motion having a pair of constant-ly moving actuator cams,

the camsk having complete movements in a different number of picks and that the treadle lever Which controls the harness iframes may be operatively related to either of said cams by a control exercised by the ,fjacquard or other pattern mechanism,

It will further be seen that the rounded portion 7 5 of the shoe cooperates With the surface 76 to place the shoe in its operative positions relatively to the rocking lever 63.

Having thus described my invention it Will be seen that changes and modifications may be made therein by those skilled in the ,art Without departing from the spirit and scope of the invention and I do not Wish to I be limited to the details herein disclosed, but

elli

what I claim is: 1

l. In a harness motion for a loom having a pair of oppositely moving harness frames to be moved by a treadlc lever, an actuator cam having a motion the cycle of which is completed in a given number of picks of the loom, a second actuator cam for a motion the cycle of AWhich is completed in a diierent number of picks of the loom, and a device .moving with but inovably mounted With respect to the treadle lever to have direct en-V gagement with either cam whereby either cam having a motion the cycle of Which is completed in a given number of picks of the loom, a second actuator cam rfor a motion the cycle of Which is completed in a different number of picks of the loom, a rocking lever pivotally mounted on the treadle lever and moving with the latter and causing movement of the latter when moved, and means to move said lever to have direct operative relation with either of said actuating cams.

3. In a harness motion :tor a loom having a pair of oppositely moving harness frames to be moved by a treadle lever, an actuator cam having a motion the cycle of which is completed in a given numbery of picks 'of the loom7 a second actuator cam Jfor a motion the cycle of which is completed in a different number of picks of the looms pattern mechanisni, a rocking lever pivotally mounted on the treadle'lever, said pattern mechanism being effective to move the rocking lever to cause the same to have'` direct engagement with either actuating cam. i

4. In a harness motion for a loom having a pair of oppositely moving harness framesk to be moved by a treadley lever, an actuator cam having a motion the cycleof vvhichis completed in a given number of picks of the loom, a second actuator cam for a motion the cycle of which is completed in a different number of picks of the loom7 a rocking lever mounted cn the treadle lever, a shoe pivoted to the rocking lever and positioned for engagement With eithercam, and pattern mechanism to move said rocking lever'and Shoe to cause the latter to be operatively placed for direct engagement with either actuating cam.

5. In a harness motionfor a loom having a pair of oppositely moving harness frames to be moved by a Vtreadle lever, an actuator vcam having a motion the cycle ot which is completed in a given number of picks of the loom7 a second actuator cam for a motion the cycle of Whichis completed in a diie'rent number of picks of the loom7 a rocking lever pivotally mounted on the treadle lever and capable of `assuming two angular positions relatively to said treadle lever, and cooperating stop means carried by the treadle and rocking levers to holdsaid rocking lever in either of its angular positions relatively to the treadle lever for direct engagement with one or the other of the cams.

In testimony whereof I have aiiixed my signature.

WiLLiAiii M. WAinriE.y

hereunto 

